Title :
Analytical optimal currents for multiphase PMSMs under fault conditions and saturation
Author :
Ngac Ky Nguyen ; Flieller, Damien ; Kestelyn, Xavier ; dos Santos Moraes, Tiago Jose ; Semail, Eric
Author_Institution :
Lab. of Electr. Eng. & Power Electron., Art et Metiers ParisTech, Lille, France
Abstract :
An original analytical expression is presented in this paper to obtain optimal currents minimizing the copper losses of a multi-phase Permanent Magnet Synchronous Motor (PMSM) under fault conditions. Based on the existing solutions [i]opt1 (without zero sequence of current constraint) and [i]opt2 (with zero sequence constraint), this new expression of currents [i]opt3 is obtained by means of a geometrical representation and can be applied to open-circuit, defect of current regulation, current saturation and machine phase short-circuit fault. Simulation results are presented to validate the proposed approach.
Keywords :
fault diagnosis; permanent magnet motors; short-circuit currents; synchronous motors; analytical expression; analytical optimal currents; current constraint; current regulation; current saturation; fault conditions; fault saturation; geometrical representation; machine phase short-circuit fault; multiphase PMSM; open-circuit; permanent magnet synchronous motor; zero sequence constraint; Circuit faults; Electromagnetics; Harmonic analysis; Inverters; Simulation; Torque; Vectors; Multiphase PMSM; fault tolerance; open-circuit; optimal currents; saturation; short-circuit; torque pulsation;
Conference_Titel :
Industrial Electronics Society, IECON 2014 - 40th Annual Conference of the IEEE
DOI :
10.1109/IECON.2014.7048968
